linux-kernel - Re: [PATCH v2 5/6] arm64: audit: Add makefile rule to create unistd

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Message-ID: <20140123145351.GF27520@arm.com>
Date:	Thu, 23 Jan 2014 14:53:51 +0000
From:	Catalin Marinas <catalin.marinas@....com>
To:	AKASHI Takahiro <takahiro.akashi@...aro.org>
Cc:	"viro@...iv.linux.org.uk" <viro@...iv.linux.org.uk>,
	"eparis@...hat.com" <eparis@...hat.com>,
	"rgb@...hat.com" <rgb@...hat.com>,
	Will Deacon <Will.Deacon@....com>,
	"arndb@...db.de" <arndb@...db.de>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"linaro-kernel@...ts.linaro.org" <linaro-kernel@...ts.linaro.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-audit@...hat.com" <linux-audit@...hat.com>,
	"patches@...aro.org" <patches@...aro.org>
Subject: Re: [PATCH v2 5/6] arm64: audit: Add makefile rule to create
 unistd_32.h for compat syscalls

On Fri, Jan 17, 2014 at 08:13:18AM +0000, AKASHI Takahiro wrote:
> generic compat sycall audit (lib/compat_audit.c) requires unistd_32.h
> for __NR_xyx compat syscall numbers. This is a different file from unistd32.h
> on arm64 and so it must be generated from unistd32.h.
> 
> Signed-off-by: AKASHI Takahiro <takahiro.akashi@...aro.org>
> ---
>  arch/arm64/Makefile                 |    4 ++++
>  arch/arm64/kernel/syscalls/Makefile |   20 ++++++++++++++++++++
>  2 files changed, 24 insertions(+)
>  create mode 100644 arch/arm64/kernel/syscalls/Makefile
> 
> diff --git a/arch/arm64/Makefile b/arch/arm64/Makefile
> index 2fceb71..6d24f92 100644
> --- a/arch/arm64/Makefile
> +++ b/arch/arm64/Makefile
> @@ -72,6 +72,10 @@ PHONY += vdso_install
>  vdso_install:
>  	$(Q)$(MAKE) $(build)=arch/arm64/kernel/vdso $@
>  
> +# Compat syscall header generation
> +archheaders:
> +	$(Q)$(MAKE) $(build)=arch/arm64/kernel/syscalls $@

See my other post to the lib/compat_audit.c file. I think that's too
complex for what you need.

-- 
Catalin
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